Cloth winding machine having selective speed control means



' P 28, 1954 H. w. GILBERT ET AL ,6 3

CLOTH WINDING MACHINE HAVING SELECTIVE SPEED CONTROL MEANS Filed May 18,1949 5 Sheets-Sheet l INVENTOR FIG. 8. I HERMAN WALTER GILBER WALTERDEICHMANNY 5/7/ 505 y 512 525 ATTORNEY Sept. 28, 1954 w, G|LBERT ET AL2,690,308

CLOTH WINDING MACHINE HAVING SELECTIVE SPEED CONTROL MEANS Filed May 18,1949 5 Sheets-Sheet 3 J'Nl-ENTORJ HERMAN WALTER GILBERT VLVQLTERDEICHMANN ATTORNEY Sept. 28, 1954 w, G|| BERT ET AL 2,690,308

CLOTH WINDING MACHINE HAVING SELECTIVE SPEED CONTROL MEANS Filed May 18,1949 5 Sheets-Sheet 4 INVENTORS HERMAN WALTER GILBERT WALTER DEICHMANNAT TORN EY Sept. 28, 1954 H. w. GILBERT ET AL 2,690,308

CLOTH WINDING MACHINE HAVING SELECTIVE SPEED CONTROL MEANS Filed May 18,1949 5 Sheets-Sheet 5 INVENTOR. HERMAN WALTER GILBERT W A LTER DEICHMANNATTORNEY Patented Sept. 28, 1954 UNITED STATES PATENT OFFICE CLOTHWINDING MACHINE'HAVIN G SELEC-. TIVE SPEED CONTROL MEANS of New YorkApplication May 18, 1949, Serial No'.-93,-896

2 Claims.

This invention relates to machines for measuradapted to facilitate thesimultaneous inspection of the cloth being measured, during themeasuring process.

A further object of the invention :is to provide an, improved clothmeasuring and inspecting A machine, which is adapted to receive any sizeof cloth roll or bolt, being adjustable for the size or length of anyroll or bolt to be measured therein, and in which novel means areprovided for quickly and easily releasing said cloth roll or bolt fordemounting the same from the machine.

Another object of the invention is to provide an improved clothmeasuring and inspecting machine including a selection of variablespeeds controlled by means of a convenient foot pedal, to increase anddecrease the speed, and also to run the machine forwardly or in reverse.

Another object of the invention is to provide eye level inspection, sothat the worker cansit at the machine, if desired, for comfortableinspection of the piece goods, the controls being simple and easilyreached.

.Still another object of the invention is to provide a clothmeasuringand inspecting: machine including a front inspection board across whichthe cloth travels and is prevented from sagging during the inspectionprocess, and also including an easily attachable and. detachable rearinspection rack across which the cloth passes in a vertical planeforconvenient inspection in this plane from the rear of the machine.

A further object of the invention is to provide an improved clothmeasuring and inspecting machine which is simple in design, inexpensiveto manufacture, and which is easyv to operateby relatively inexperiencedworkers with a high degree of accuracy and speed.

Other objects and advantages of the invention will become apparent fromthe following. description of a preferred embodiment, thereof asillustrated in the accompanying drawings, and in which:

Fig. 1 is a side elevation of the machine:

Fig. 2 is a front elevational view of the ma,- chine shown in Fig- 1,that is, as ,seen from the left-of Fig. 1,

Fig. 3 is a sectional side .elevational view of the machine as seenonlane 3-4 of Fig. 2,

Fig; 4 is a fragmentary. plan, view in detail takenon line 4-4 of Fig.2,

, Fig. 5 is a sectional elevation of the gear box and ears and shaflzstherein.

Fig. 6 is a sectional. elevation taken on plane 6-.6 of Fig; 5,

Fig. 7 is a side elevational viewsimilar to that of Fig. 3, but showinga modified form .of the invention, by means of which the machine isprovided with-both a frontinclined inspection board anda rear-wardinspection rack for inspecting the cloth from the rear of the machine ina vertical plane,

Fig. 8 is a schematicvwiring diagram illustrating the operation .of afoot control switch for the motor;

Fig. 9 is a schematic showing of a portion of the apparatus shown, inFig. 3 and illustrating a modified or alternateuse thereof; and

Fig. 10 is a top plan view of a portion of the apparatus shown in Fig. 3and .illustrating a modified form of the invention.

In the use and. operation of ,cloth measuring and inspecting machines,it is necessary that this be quite convenientto the operator, since itis a delicate operationrequiring concentration of the operator on, thework at hand, namely that of measuring the length of the cloth on theroll or bolt, and also thatv of inspecting the cloth during themeasuring operation, for. defects. The machine should be readily. andeasily adjustable to receive any. size of roll or bolt to be inspected,and should be readily adjustable ,as to speedand direction of rotation.The controls should. be accessible, particularly the speed control, sothat the operator can, from any position along the front of the machine,regulate the speed to a high degree of accuracy to facilitate themeasurement and inspection of the-cloth; The present invention fulfillsthese requirements.

In order to understand clearly thenature oi the invention and the bestmeans for carrying it out,

, reference will now be had to the drawings, in

parts 3 lighten their total weight and to render the parts of themachine more visible to the operator, flanges 22 being formed integralwith the walls along the edges and also surrounding each opening, toincrease the strength thereof. The end frame walls are interconnected atthe bottom by two lower main guide rods 24 and 26 respectively, the endsof which are inserted through matching openings in the frame walls andsecured therein in any suitable manner, as by means of nuts threadedthereon. These rods 20 and 26 are preferably highly polished orlubricated to reduce friction therealong.

A lower main front roll support bracket 28 has axially aligned bearingbores formed in its lower feet ends 30 and 32 to receive slidably theguide rod 24 which thus rides thereon from left to right and vice versaalong the length of the machine, the main bracket 28 also having arearwardly inclined strut leg 34, secured at its upper end 36 to anintermediate portion of the bracket 28, and having its lower end 38 inthe shape of an open rounded yoke as seen best in Fig. 3, to partiallyembrace the polished rod 26 so as to ride therealong, maintaining theposition of the parts as shown best in Fig. 3.

At its upper end portion, the main lower bracket 28 is provided withintegral upstanding studs 38 and 00, having axially aligned bores formedtherein parallel to the axis of the rod 20, to receive a roll supportplunger 02, which is axially slidable as seen in Fig. 2. The plunger 02is biased toward the right as seen in that view, by the spring 44, itsrightward motion being limited by the collar 46 secured on and movablewith the plunger 42, and against which the spring presses. The plungershaft extends beyond the stud to the right, having mounted thereon acone-shaped plug 48 which is adapted to enter one end of a cloth rollI50, being roughened to enhance its frictional qualities.

At the right hand end of the cloth roll 00, there is a similarcone-shaped plug 52 which enters the other end of the cloth roll, topro-' Vide support therefor, being part of a stub shaft 50 which isjournaled in a suitable bearing aperture formed in the right hand endframe wall I l of the machine. A pulley or sprocket wheel 68 is securedto the shaft 54, for rotation therewith, being driven when power isapplied through.

a belt 60 also coupled with pulley wheel 10, which in turn is mounted onand rotatable with output shaft I2 of the gear box I0, which is alsoshown in Figs. and 6.

It is thus apparent that through power supplied from shaft I2 of thegear box, rotation of the cloth roll 50 may be accomplished. Referringagain to Fig. 2, it will be seen that the position of the main bracket26 will depend upon the length of the cloth roll 50, and that thebracket 28 may be moved to the left or right as desired for thispurpose. To hold the main bracket 28 in position, a pressure foot orbrake 80 has its lower end adapted to press downwards upon the rod 24,with its upper end pivotally secured to the end 82 of a lever arm 84 bypivot pin 86, the lever arm 84 being fulcrumed in the main bracket 28 inany suitable manner and turnable about such fulcrum by means of alooking handle 08. Thus, the pressure foot or brake 80 is presseddownwards against the rod 24 by moving the handle 88 to an uprightposition, and released from such braking pressure, to release thebracket, by turning the handle to 4 either side, such as to the left asseen in Fig. 2.

To release the cloth roll 50 from the cones 08 and :52, I provide aretracting handle 90 pivoted to bracket 28 at 92, and connectedpivotally at 00 by a pair of connecting levers 00, to the collar 00. Itis apparent that turning the hantile 00 counterclockwise as seen in Fig.2 will pull the cone 48 to the left, releasing the cloth roll 50. So asnot to interfere with the free rotation of the cone 5B and its shaft 42,the collar 00 may be so arranged as to engage a circular groove in theshaft 02 so as to maintain its position longitudinally of the shaft, oran integral shoulder of the shaft 42, or other well known means may beused to accomplish this result, the cones 48 and 52 being rotatable withthe cloth roll 50.

Three mutually, spaced parallel guide rods I00, I02, and I04 all lie ina horizontal plane above that of the lower guide rods 24 and 20 andparallel thereto, these guide rods also being secured at their ends tothe frame end walls I0 and I2 by means of screws, nuts threaded on theirends, or other well known means, so as to maintain the spacing betweenthe frame end walls and to be firmly supported thereby. An upper clothroll support bracket I06 is slidable longitudinally along the upperguide rods I00 and I04, having a rearward extension I08 with bearingapertures formed in the hubs [I2 and I14 to receive the guide rod I00,and having a bearing yoke formed at IIO to slidably engage the rod I0 5,the extension I08 extending beneath the guide rod I02, as seen best inFigs. 3 and 4, to clear the same.

A pressure foot I20 is pivoted in the bracket I00 at I22, with its endI20 adapted to bear in frictional engagement against the rod I00 tomaintain the position of the bracket I06 on the rod I00, pressure beingapplied by the hand lever I I26 for this purpose. A push rod or plungerI30 is slidably disposed in axially aligned openings formed in thebosses I32 and I30 of the bracket I06, having rotatably mounted on oneend thereof a cone I36 adapted to engage frictionally inside one end ofa cloth roll I00. A similar cone I02 is insertable inside the other endof the cloth roll I40 for frictional engagement therewith, being mountedon a shaft I04 for rotation therewith, the shaft extending out of thegear box M.

The plunger I30 is biased toward the right as seen in Figs. 2 and 4, bymeans of an encircling spring I06 the right hand end of which pressesagainst a collar I48 engaging the plunger, so that the spring pressurecannot push the plunger beyond the boss I30. A hand lever I50, which ispivoted at I52 to the boss I32, also pivotally engages at I54 one end ofeach of a pair of levers I58, the other ends of which engage the collarI48. Thus, by Pulling the hand lever I50 toward the left, that is in acounterclockwise direction as seen in Fig. 2, the effect is to draw thecone I36 out of the cloth roll I00, so that a new roll I00 may beinserted or the old one removed. It is also apparent that by releasingthe lever I26, the distance between cones I36 and I42 may be adjusted tofit any size of cloth roll I00.

A highly polished cloth guide rod or roller I00 is secured between theframe end walls I0 and I2 as shown, so that cloth may move thereover asseen best in Fig. 3, before moving across the examining board I26 whichis made of wood or other suitable sheet material. The examining boardhas a width as long as the length of the rod I60, being supportedati'tsimper end edge upon themachine frame, as by engagement with alateral tie rod I66 hung in recesses I68 formed in the frame end wallsas seen in Figs. 1 and 3. The lower end edge of the examining board I62may rest upon a similar lateral tie rod II0, shown in Fig. 3, andsecured at its ends in portions I72 of the frame end walls.

After passing upwards over the guide roller I60 and over the examiningboard, the cloth continues upwards over the smooth upper guide rollerI14 which is secured at its ends tothe frame end walls, and thenproceeds downwards in the direction of the arrow-I16 in Fig. 3, andaround another guide roller orshaft I18 which is also supported by theframe end walls and-is highly polished. From roller II8'the cloth I80proceeds rightwardly downwards as seen in Fig. 3, and around the guiderod or roller I82 which is supported at its ends byithe radius arms I84,these being tensioned and biased counterclockwise by engagement with oneend of spring I86 the other end of which is secured to the frame of themachine as at I88.

The cloth then moves upwards and around the surface of a counting drumI90having a relatively larger diameter, as seen best in Fig.8, beingcarried on and rotatably movable with a shaft I92 which is journaled atits ends in the frame end walls I0.and I2. A counter I94 is mounted onthe machine frame adjacent the end of the shaft I92, so as to countthe'revolutions thereof in terms of yardage of cloth or other suitableunits of measurement.

As the cloth passes over the counting drum I90, pressure is appliedthereagainst bya rubber pressure roller I96 the shaft I98 of which hasitsends lying in a pair of inclined slots 200 formed in the machine endwalls I0 and I2, so that through force of gravity, the weight of thepressure roller causes it to exert its pressure on the counting drum andcloth passing thereover. Having passed over the counting drum in aclockwise direction as seen in Fig. 3, the cloth moves downwards overthe guide rod I04, and thence over a tension roller 202, the latterbeing carried on its ends upon lever arms 204 pivoted about the axis ofrod I04 and spring biased counterclockwise by a spring 208. The clothI80 then passes over the cloth roll 50 in a counterclockwise directionas seen in Fig.3, being thus wound thereon. Its yardage having beenautomatically counted, it has also been inspectedas it passes over theinspecting board I62. In order to roll the cloth off roll I40 and ontoroll 50, the

shaft 54 and cone 52 have been driven by power derived from the motor 2I0, on shaft 2 I2 of the gear box.

By now driving shaft I2 of the gear box instead of shaft 54, and in asuitable direction, the upper shaft I44 and cone I42 are driven, so asto reverse the direction of the cloth, winding it right, back again onroll I40. Figs. 5 and--6 illustrate the construction of the interior ofthe gearbox I4, by means of which either shaft I2 or I44 may be drivenfrom the gear box input shaft 2 I2.

The gear box housing 14 includes top and bot: tom walls 350 and 352,sidewalls 354. and:356, and end walls 358 and 380, mounting holes 362and 364 being formed in the end wall 358170 receive bolts for securingthe housing to the frame of "the machine. The power input shaft. .2I2 isjournaled in the gear box walls 354 and 3.56.:as seen best inFig... 6,having .a worm .366 mounted thereon for rotation therewith. This worm.366 engages and drives a geari368 which is mounted on and rotatablewith a shaft 310 which is spaced from the shaft 2 I 2 and is disposed atright angles thereto.

The shaft 310 is journaled in the walls 358 and 360 of the gear box,preferably in anti-friction bearings 3I2 and 314.- A studwheel.3l6 ismounted on the shaft 310 for rotation therewith, having a key extendingslidably into-a keyway 378 formed in the surface "of the'shaft- 310 andparallel to the axis'of said shaft In this manner, the stud wheel 316 iscontinuously rotatable with the shaft 310, but is yet slidable axiallytherealong, from left to right-as seen in Fig. 5. 1

The stud-wheel has a peripheral groove 380 which receives a crank pin-382 depending from the distal end of a crank lever 384,"which is pivotedon the vertical shaft 386 and'movable with the shaft 386 about itsvertical axis, through a limited arc, so as to move thestud wheel 316from left to right and vice versa. A crank handle or direction controllever 380 hasits reduced end 390 extending into and secured to the upperbifurcated end of the shaft 386 for turning the said shaft for direct orreverse rotation of the machine. It is seen that the crank handle 388extends leftwardly as seen in Fig. 6, through anopening 392 formed in abracket 394 which is carried by the gear box and secured thereto. Theupper edge of the opening 392 is recessed at several locationsperpendicular to the view of Fig. 6, so that it is necessaryto depressthe leftward portion of the handle 388 to clear these recesses, to allowthe handle to be placed in any desired recessed position, for example,center neutral, left, and right, and a spring 396 may be used to biasthe handle so as-to remain in-any selected recess.

For driving the output shaft I44 from the input shaft 2I2, it is seenfirst'that the'shaft- I44 is also journaled inthe walls-358-and 360, andhas mounted-thereon for rotation therewith a gear 400. This gear 400 hasits teeth intermeshing with the teeth of a gear 402 which is mounted onthe shaft 310 for free rotation thereon. A stud 404 projects leftwardlyfrom the left surface of the gear 402 as seen in Fig. 5, for engagementwith one of the mating studs 406 on the stud wheel 3-!6 when the studwheel is moved to the-right on turning the handle 388. In this manner,the stud wheel will drive the gear 492 and hence drive theshaft I44.

To drive the other output shaft I2, which is journaled in the gear boxwalls 358 and 369,- a sprocket wheel M0 is mounted on the shaft -l2 forrotation therewith. Another sprocket wheel H2 is mounted on theshaft 310for rotation thereon, and is coupled by sprocket chain 4I4, with thesprocket wheel 4I0, so as to drive the latter. A crankstud 4I6 projectsrightwardly from the right face of the sprocket wheel 412 as seen inFig. 5, so that it will engagewithone of the leftwardly projectingstuds4I8 on thestud wheel-376, when thestud wheel is moved toward theleft, for driving the sprocket wheel 4I2. In this manner, it is seenthat on moving the stud wheel to the left, the shaft "I2 will be driven,instead of the shaft I44.

A brake cylinder 420 with surrounding-brake band, asseen best in Figs. 1and 5, may be mounted-on one of theshafts of the gear box to regulatethespeed and to stop rotation suddenly when necessary, being actuated bya brake han- 7 The driving motor 2H) is mounted on a motor base 2| l,which is hinged at 214 to the machine frame and wall [0, so that theweight of the motor exerts a downward pull upon the belt 216 by whichits drive shaft pulley 2H is coupled to the upper driven pulley 220mounted on the shaft 222 for rotation therewith so as to drive the shaft222. Shaft 222 is journaled in a pair of channels or brackets 226 whichare pivoted at their ends 228 as seen best in Fig. 2, to the frame endwall 10. A push rod 230 has its upper end pivotally supporting the outerend of the bracket 226, so as to be able to elevate or lower the same.At its lower end 232, the push rod 230 is pivoted to one end of a pedallever 234 which engages the shaft 236 so as to turn the shaft about itsaxis, the shaft 236 being pivoted in the machine frame end walls I!) andi2 for this purpose. A treadle or step 240 is carried upon the outerends of radius levers 2M, as seen in Fig. 3, which are carried by andturn with the shaft 236, being normally biased by gravity into thepositions of Figs. 1 and 3. The treadle 2E0extends the entire length ofthe machine, so as to be easily accessible to the operators foot at anytime.

Referring now again to Figs. 1 and 2, it is seen that the gear box inputshaft 2l2 carries a pulley 250 for rotation therewith, the pulley 252being coupled by means of the V-belt 254 with a variable speed V-pulley258 which is also mounted on the shaft 222 for rotation with pulley 220.The variable speed pulley 256 has two halves, one being shown on eitherside of the V-belt 254 in Fig. 1, and having their inner faces conicalin shape. The V-belt 254 extends between these two conical pulley faces,being driven thereby, and by varying the spacing between the two facesby moving them nearer together or further apart by the push rod 236, theratio of effective diameter of pulley 256 over that of pulley 25!] isadjustable to obtain any desired speed, by merely using the foot treadle2 55 for this purpose. As the spacing between the two conical faces ofthe V-pulley 255 is varied, the weight of the motor 2 l immediatelytakes up any slack, since both the motor and the brackets 226 arepivoted in the frame end wall Fig. 7 shows a modified form of theinvention, all the elements being the same except that it provides meansfor inspecting the cloth both across the examining board in an inclinedplane, and also in a vertical plane along the back of the machine. To amachine of the type shown in Fig. 1, we add a pair of upright brackets225, one at each end of the machine, and secured to the end walls It andE2 by means of bolts 21'! and 279.

The brackets 275 are interconnected by smooth guide rods or rollers28!), 282 and 284, all parallel to the shaft I92.

We provide an inspecting board 300, the upper edge of which is hung atthe ends in hooks 382 formed in the brackets 215, and the lower edge ofwhich rests upon a lateral rod 304 which is seated at its ends in theupwardly open slots 366 formed in the portions N2 of the frame end wallsIt] and I2.

In the form shown in Fig. 7, it is seen that the direction taken by thecloth is somewhat different from that in Fig. 3, as follows. Being oncloth roll M6, the cloth 3% travels in the direction of the arrow 3m,upwards over the left face of the inspecting board 300, and then overthe upper edge of the board 38!) and downwards in the direction of thearrow 312 and around the roll or rod I60. Thence it moves toward andaround rod I82 and around the counting roller I in a clockwisedirection, being counted as to yardage as already explained. Then thecloth proceeds around roll 282 and upwards in the direction of arrow 314and over roll 28!) and downwards in a vertical plane along arrow 3H5 inwhich plane it may be inspected by the operator from the rear of themachine.

Then it moves over roll 28% and downwards over tension roll 202 and ontocloth roll 59. When the inspection and measurement is completed, roll MBis driven instead of roll 5i], so as to rewind the cloth right backagain on roll Hit]. By means of suitable changes in the shape of themembers shown conical at 58, 52 and the like, to flatten them outsomewhat, bolts of cloth may also be accommodated in the machine withthe same ease as rolls of cloth.

' While the apparatus, constructed and arranged asdescribed above, maybe used for all types and weights of material, which it is desired tomeasure, we have provided in accordance with our invention an alternatearrangement as illustrated schematically in Fig. 9, when the cloth to bemeasured is of the heavier or thick pile type. To this end there isprovided an auxiliary highly polished guide rod or roller 53%, similarin purpose and function to that of the rod I69, and similarly securedbetween the frame end walls. As noted in Fig. 9 the said rod 586 is sopositioned whereby the cloth passes thereunder and thence between theroller I and drum E92 and over the roller I18 in substantially astraight line- There is thus provided substantially tangential contactof the cloth with the measuring drum 192 instead of the arrangement asshown in Fig. 3. A similar arrangement of one point contact with themeasuring drum may also be provided in connection with the Fig. 7 formof apparatus where inspection of the cloth is desired.

While in Fig. l of the drawings we have shown a toggle switch 505 ofusual construction for energizing the motor 2H1, our invention alsocontemplates the following foot control switchmeans for automaticallystarting the operation of the motor when the operators foot is placed onthe treadle 240, as clearly illustrated in Figs. 8 and 10.

A cable member 5!!) of wire or other suitable material is fixed at oneof its ends to the frame H] by a bolt member 5!! or other suitableattaching means. The said cable 5"} extends in a direction toward theframe l2 and is arranged parallel to and closely adjacent the treadle220. The said cable may be disposed at about the same level as thetreadle 240 in its uppermost position or slightly above the same. Theopposite end of the cable 5H3 is attached to a switch arm 512 carryingan electrical contact portion 5l5. A spring 5E6 keeps the cable 5H]relative taught and a second spring 5|! stronger in action than thespring 5H5 normally tends to keep the switch portion 515 out of contactwith the electrical contact member 528. It is thus seen from the abovedescription that when the operator places his foot on the treadle 2 56,a portion of the operators foot will rest over the cable 5H1. Slightpressure on the cable will cause the switch arm M2 to make electricalcontact between the members Elf) and 520 and thus energize the motor2!!) even if the toggle switch 505 is open. Removal of the operatorsfoot from the treadle 24B and from the cable 5H] will automatically shutoff the motor 2).

The switch device parts 5l2, 516, 5, H5 and 529 may be housed in asuitable casing 525 fixed to the frame l2 by an angle bracket 526.

It is further noted that in accordance with our invention we havedesigned our apparatus in such manner that the front inspection boardmember 309 and rear inspection device illustrated in Fig. 7 are ataverage eye level so as to avoid undue eyestrain or neckstrain on thepart of the operators or inspectors.

It is thus apparent that we have described a novel and improved form ofmachine for the measurement and inspection of cloth both on rolls andbolts, with ease and accuracy.

Although we have described our invention in specific terms, it will beunderstood that variations may be made in size, shape, materials andarrangement Without departing from the spirit and scope of the inventionas claimed.

We claim:

1. In a cloth measuring and inspecting machine comprising a frame: firstmeans carried by said frame for supporting for rotation a first clothroll, second means carried by said frame for supportin for rotation asecond cloth roll, third means carried by said frame for supplying powerto said second means to rotate the same to unwind cloth from said firstcloth roll and onto said second cloth roll, the improvement comprising:said third means including a motor disposed in said frame to providedriving power, gear box means coupled to both said first means and saidsecond means for driving the same, and including power input means insaid gear box coupled to said driving motor for being driven thereby,first and second power output means in said gear box with gear shiftmeans accessible to the operator for driving from said power input meanseither of said power output means as desired, and variable speed meanscoupling said motor and said power input means, said variable speedmeans comprising a first pulley mounted on and driven by said motor, asecond pulley mounted on and rotatable With said power input means ofsaid gear box, a third pulley rotatably supported on said frame andcoupled to said first pulley by a belt, a variable speed pulley mountedon said frame and rotatable with said third pulley, and coupled to saidsecond pulley by means of a belt, and means accessible to the operatorfor changing the speed ratio of said variable speed pulley in relationto the second pulley, whereby the speed of drive of the second pulley isvariable, said third pulley and said variable speed pulley beingdisposed on a common bracket pivoted in said frame below said secondpulley, said motor pulley being disposed beneath said common bracketwith said motor being pivoted oif-center in said frame so that theweight of the motor acts to exert a down- Ward bias upon said commonbracket to maintain said two belts continuously under tension, saidspeed means accessible to the operator for changing the speed ratioincluding a lever pivoted in the frame and engaging said variable speedpulley for adjusting the spacing of the variable speed elements thereofto vary the speed ratio, and a treadle pivoted in said machine frame andengaging said lever for actuating said speed change lever, said treadlebeing substantially as lOIlg as said machine and extending lengthwisetherealong for convenient accessibility to the operator at any pointtherealong for speed change.

2. The construction according to claim 1, characterized further in thata brake drum is carried by one of said gear box shafts, a brake band isadapted to engage said drum for regulating the speed thereof, and acontrol lever means is provided for actuating said brake band.

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